23212249 has 2 divisors, whose sum is σ = 23212250. Its totient is φ = 23212248.

The previous prime is 23212247. The next prime is 23212271. The reversal of 23212249 is 94221232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20539024 + 2673225 = 4532^2 + 1635^2 .

It is a cyclic number.

It is not a de Polignac number, because 23212249 - 2¹ = 23212247 is a prime.

Together with 23212247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23212247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606124 + 11606125.

It is an arithmetic number, because the mean of its divisors is an integer number (11606125).

Almost surely, 2^23212249 is an apocalyptic number.

It is an amenable number.

23212249 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212249 is an equidigital number, since it uses as much as digits as its factorization.

23212249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 23212249 is about 4817.9091938309. The cubic root of 23212249 is about 285.2588148574.

The spelling of 23212249 in words is "twenty-three million, two hundred twelve thousand, two hundred forty-nine".